On Fri, 2017-04-07 at 09:52 +0100, Marc Zyngier wrote: > On 07/04/17 09:06, Youlin Pei wrote: > > In Mediatek SOCs, the CIRQ is a low power interrupt controller designed to > > works outside MCUSYS which comprises with Cortex-Ax cores,CCI and GIC. > > > > The CIRQ controller is integrated in between MCUSYS and interrupt sources > > as the second level interrupt controller. The external interrupts which > > outside MCUSYS will feed through CIRQ then bypass to GIC. > > > > In normal mode(where MCUSYS is active), CIRQ is disabled and interrupts > > will directly issue to MCUSYS. When MCUSYS enters sleep mode, where GIC > > is power downed. CIRQ will be enabled and monitor all edge trigger > > interrupts(only edge trigger interrupts will be lost in this scenario). > > When an edge interrupt is triggered, CIRQ will record the status and > > generated a pulse signal to GIC when flush command is executed. > > > > With CIRQ, MCUSYS can be completely turned off to improve the system > > power consumption without losing interrupts. > > > > change in v4: > > 1. add some comment to explain CIRQ suspend callback. > > 2. rebase on 4.11 > > Hi Youlin, > > I'm happy to take the first two patches through the irq tree. How do we > deal with the third one? It seems to me that it'd be better routed via > armsoc. > > Let me know what you and Matthias want to do. Hi Marc, Thanks for your review. I think that driver and dtsi can merged separately. Hi Matthias, Could you help to review the dtsi patch? Thanks a lot! > > Thanks, > > M. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
